A recent Staples High School graduate who participated in polar-bear research in Canada will discuss how climate change is threatening the bears' habitat on Monday, July 8, at the Westport Library.

Sarah Cooperman will speak at 7 p.m. in the library's McManus Room.

In 2011 she was chosen to participate in Polar Bear International's Leadership Camp in Churchill, Manitoba, Canada, which the group dubs "Polar Bear Capital of the World." Cooperman will discuss her experiences and forces that threaten polar bears with extinction, library officials said.

According to library officials, Polar Bear International says the Arctic summer sea-ice cover has both shrunk and thinned by 45 percent. Since the 1970s, it has lost 70 percent of its volume.

Cooperman's talk is being presented with an art exhibit scheduled to open later this summer in the library's lower-level entitled "The Canary in the Coal Mine: The Plight of the Polar Bear -- and Planet Earth."

The exhibit will run from Aug. 16 to Dec. 1.